Re: [AMC-List] M-35/T-96 trans options

[<francis.swygert@xxxxxxxxxxxxxxxxxx>]

I, and a few others, have seriously considered some kind of adapter or
bracket to allow use of a torque tube with a newer trans. You'd think it
would be simple enough, but the rear axle actually pushes the tube to
make the car move. A bracket on the crossmember sounds good, but the
engine is on rubber mounts and you can't have movement between the TT
and engine. AMCs solution was to rubber mount the trans crossmember as
well, but there is still semi-rigid link between the engine and TT. So
the TT has to be mounted to the trans itself. This puts more stress on
the engine and trans mount, and newer ones weren't designed for fore and
aft stresses. So it really isn't practical. Nor is using the rear axle.
The pinion shaft isn't drilled for a bolt to hold a yoke on, and I'm not
sure it has the same splines and diameter as open drive axle pinion
shafts. The seal is designed to fit the slip coupling at the axle and
may not fit around a yoke and an open drive axle seal may not fit the
seal carrier (especially if the yoke is bigger in diameter). Since axles
are relatively easy to swap even between makes, it just isn't practical
to spend a couple hundred dollars modifying the old TT axle. 

What really brought this up was Andrew's mention of length. The TT
internal shaft on sixes is like an axle shaft. It would need to be
resplined if shortened, and can't be easily lengthend. A new shaft would
be required, or a longer slip coupling for the axle end could be made is
only an inch or less more length was needed. Both would be costly --
even shortening and having tho original resplined would be a bit
expensive.  

The V-8 shaft, however, is in two pieces. The front is tubular and can
be made longer or shorter by any driveline shop, as can the outer tube.
The only problem with V-8 shafts is the CV joint on 63-66 models. Those
are the only years that joint was used, and it was only used by one
other company -- Lincoln. The joint nor repair parts are no longer made.
Earlier Rambler V-8s only used a single joint, so the CV joint isn't
really necessary. So the shaft can be lengthened and a single joint or
even a newer/different style CV joint used. The trans end can't be
reused, but all the BW V-8 trannys used the same yoke as a T-10, and
that is still available, or one can be picked up at a salvage yard from
any 67-71 AMC driveshaft. 

---------------------------------------------------
Date: Monday, August 21, 2006 09:41 AM
From: andrew hay <adh@xxxxxxxxxxxxxxxxx> 
" From: farna@xxxxxxx
"
"
" While having a more modern trans would certainly be a benefit, you're
" hindered by the torque tube. I don't think a T-14 or T-15 will bolt
" right in, just the T-86 or T-89. Heavy duty, but still no synchro
" first.

both the t-14 and t-15 would fit the engine side but of course were
never made in tt versions, so you'd have to find one of the rare o/d
versions so you could swap your od-tt adapter parts on, but they'd
probably end up the wrong length...

if you wanted to try making an adapter, you could start with a car
t-14 or t-15.  put a 4wd tailshaft housing on it and make the adapter
bolt to it on one side, the tt on the other.


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